发明申请
- 专利标题: DISPLAY DEVICE
- 专利标题(中): 显示设备
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申请号: US12867691申请日: 2008-10-08
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公开(公告)号: US20100309107A1公开(公告)日: 2010-12-09
- 发明人: Takao Muroi , Katsuteru Hashimoto , Katsuya Otoi , Kohji Fujiwara
- 申请人: Takao Muroi , Katsuteru Hashimoto , Katsuya Otoi , Kohji Fujiwara
- 优先权: JP2008-033213 20080214
- 国际申请: PCT/JP2008/068304 WO 20081008
- 主分类号: G09G3/36
- IPC分类号: G09G3/36
摘要:
It is an object of the present invention to provide a liquid crystal display device with high color reproduction ability even when an area active backlight is driven. A liquid crystal display device (1) of the present invention drives a liquid crystal panel (2) and a backlight device (3), respectively, using a video signal input from outside. In the backlight device (3), a plurality of illuminating areas (Ha) are set on LED substrates (7) with respect to a plurality of display areas provided on the liquid crystal panel (2), and area active backlight drive is performed, which lights up light-emitting diodes (8) in the unit of the illuminating areas. When a backlight data processing part (lighting control part) (15) determines that a brightness signal value indicated for a blue light-emitting diode (light source of a predetermined color) (8b) is larger than brightness signal values indicated for other light-emitting diodes (8r, 8g), and determines that a value obtained by multiplying the brightness signal value indicated for the blue light-emitting diode (8b) by a predetermined ratio is equal to or more than the bright signal values indicated for the other light-emitting diodes (8r, 8g), the backlight data processing part (15) lights up the other light-emitting diodes (8r, 8g), using the brightness signal value indicated for the blue light-emitting diode (8b).